C.T. Lee has joined UMC, a semiconductor foundry in Hsinchu, Taiwan, as vice president of corporate marketing.. . .Photronics Inc., developer of subwavelength reticle solution technology, announced several senior level promotions: Dan Del Rosario was named CEO, replacing Constantine S. Macricostas , chairman of Photronics and acting CEO. Executive Vice President and COO Paul J. Fego has been elected president and will continue to serve as COO. J. Gregory Hickey, currently treasurer of Photronics, has been promoted to vice president, and Sean T. Smith, vice president and controller, has been promoted to CFO, replacing Robert J. Bollo, who has retired from the company.
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